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Finding the Fourth Proportional to 343,661.51, 515,869.37 and 273,038.11

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Solution

The fourth proportional to 343,661.51, 515,869.37 and 273,038.11 is: 409,856.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,661.51 : 515,869.37 = 273,038.11 : x
  2. Step 2: Convert to fraction form
    343,661.51/515,869.37 = 273,038.11/x
  3. Step 3: Cross multiply
    343,661.51x = 515,869.37 × 273,038.11
  4. Step 4: Simplify right side
    343,661.51x = 140,851,997,791.69
  5. Step 5: Solve for x
    x = 140,851,997,791.69/343,661.51
  6. Step 6: Final answer
    x = 409,856.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.